Salk Institute CCMI: Flow Cytometry
http://flowcyt.salk.edu/

Molecular Probes Fluorescence Spectra Viewer http://probes.invitrogen.com/resources/spectraviewer/

BD Biosciences Fluorescence Spectrum Viewer
http://www.bdbiosciences.com/spectra

National Flow Cytometry Resource
http://nfcr.lanl.gov/

Wikipedia entry on flow cytometry
http://en.wikipedia.org/wiki/Flow_cytometry

International Society for Analytical Cytology
http://www.isac-net.org/

NCI ETI Branch Flow Cytometry Core Laboratory
http://home.ncifcrf.gov/ccr/flowcore/index.htm

The Clinical Cytometry Society
http://www.cytometry.org/

Roswell Park Cancer Institute Laboratory of Flow Cytometry
http://www.rpciflowcytometry.com/index.html

The University of New Mexico Cytometry Resource
http://hsc.unm.edu/som/research/flowcyt/index.shtml